SparkFun Electronics Commentsurn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f82492015-03-31T14:57:28-06:00SparkFun ElectronicsKevin Vermeer on COM-00563 - Luxeon III LED - White 3 Watt (Sale)Kevin Vermeerurn:uuid:5d77ce3e-0479-678f-299e-65874cff53382010-12-22T18:57:14-07:00<p>DOT rules vary from state to state; it&rsquo;s legal to make your own in mine but you&rsquo;re only allowed to have 4 &lsquo;lamps&rsquo; at a time.<br/>
Also, it&rsquo;s hard to say whether 9W of LED light would be dimmer or brighter than 51W of halogen. I&rsquo;d guess that they&rsquo;d be dimmer, but much less than 5 times as dim.<br/>
Also, 2 amps won&rsquo;t hurt your alternator a bit. Nearly all alternators put out at least 65 amps, if your vehicle is large and came with lots of power options (windows, doors, trailer lights, etc.), you&rsquo;ve likely got 100A or more.</p>chansuke on COM-00563 - Luxeon III LED - White 3 Watt (Sale)chansukeurn:uuid:c2d658b7-dcb9-663c-b98d-64ce6488f9c92010-09-01T01:06:50-06:00<p>No.<br/>
Thats actually illegal as all lights must pass Department of Transportation testing. Plus these would still not be as bright at long range as your headlights. If youre worried about your alternator having too much load, do the proper thing and upgrade it to a higher capacity one.</p>Seth147 on COM-00563 - Luxeon III LED - White 3 Watt (Sale)Seth147urn:uuid:b55cd245-5028-6f03-a5e6-2f7990e4092e2010-06-26T15:20:06-06:00<p>That driver only runs it at 350 miliamps. The led can be run at 1400 miliamps so wouldn&rsquo;t it be a waste of the led to only run it at 350&hellip;.</p>N8B on COM-00563 - Luxeon III LED - White 3 Watt (Sale)N8Burn:uuid:ca9e157d-26b2-5842-2386-7fe74b8e97e72010-06-24T08:49:29-06:00<p>You will indeed get the LED to light up by plugging it into a 3.7V LiPoly. As I understand it, this LED should technically be used with this product:<br/>
<a href="http://www.sparkfun.com/commerce/product_info.php?products_id=9642" rel="nofollow" >http://www.sparkfun.com/commerce/product_info.php?products_id=9642</a><br/>
to optimize lifespan and performance.</p>Seth147 on COM-00563 - Luxeon III LED - White 3 Watt (Sale)Seth147urn:uuid:b54cf08d-0abe-4fe3-8167-eb194fea16fb2010-06-23T16:04:26-06:00<p>If you are going to hook this up to a lithium battery that puts out about 3.7 volts (Actually like 4.1) When fully charged) Do you just hook it straight up to the battery? Or can you use a resistor to limit the miliamps to the light so it lasts longer?</p>RobertC. on COM-00563 - Luxeon III LED - White 3 Watt (Sale)RobertC.urn:uuid:16b9fa25-767d-698d-366d-5ca9a9e1a8182010-05-20T08:31:48-06:00<p>You could always look at the triple play rebel boards. They have heatsinks and driver boards (coming soon), so it makes it a bit easier.</p>mewtwoEX on COM-00563 - Luxeon III LED - White 3 Watt (Sale)mewtwoEXurn:uuid:323441c6-ecb9-e16e-24c4-285b741f82a92010-05-20T07:58:55-06:00<p>36A if you run them in parallel. If you put 3 in series, you&rsquo;d only need 12A. A cheapo computer power supply I have puts out 18A on the 12v rail. Use that to power a constant current source and you won&rsquo;t need an expensive PSU.</p>Mik3fly- on COM-00563 - Luxeon III LED - White 3 Watt (Sale)Mik3fly-urn:uuid:2a78a90b-8c52-7eb4-81cb-c8e35d3c626d2010-04-30T09:43:10-06:00<p>There leds are fragile but very impressive, i burned two of them, because my power supply was set with an offset of 2volt!!</p>letter on COM-00563 - Luxeon III LED - White 3 Watt (Sale)letterurn:uuid:2e6a4037-0f47-d670-212d-b7ab405020112010-04-26T20:44:36-06:00<p>Got a couple of these to mess around with and they are so bright they freak me out a little bit.<br/>
They get HOT. After feeling how quick one heats up I&rsquo;m not going to use mine until my spark fun break out board arrives.</p>MartinCU2010 on COM-00563 - Luxeon III LED - White 3 Watt (Sale)MartinCU2010urn:uuid:c8f01922-5513-8e3f-a7e2-a78ef09d74d62010-03-14T15:31:02-06:00<p>WOW! is all I can say with only 580mA these things are amazingly bright. I think my coral will like these.</p>Skye on COM-00563 - Luxeon III LED - White 3 Watt (Sale)Skyeurn:uuid:bcd0ecbf-8417-be45-502f-5b45efe69dc42010-01-18T15:41:30-07:00<p>Wow! Its been an hour and I still have an after image from just one LED running at 25% power. My son wants to make a 6*6 array of these as a photo studio light source. The great benefit is hardly any heat. But 36 of these would cost nearly $300 without even adding the heatsinks and power suppy (36 AMPS!!!). Maybe we should rethink this!</p>sirus20x6 on COM-00563 - Luxeon III LED - White 3 Watt (Sale)sirus20x6urn:uuid:c8515061-f857-37d0-7ffb-f419c1b058a12009-07-12T00:22:50-06:00<p>can i run 3 or 4 of these in series without a resistor off of 12V car voltage to replace a headlight? i want to take some load off my alternator. current headlights are 51W x 2 lights. 9 watts a light would be very nice.</p>thisupend on COM-00563 - Luxeon III LED - White 3 Watt (Sale)thisupendurn:uuid:a77f9fae-3d32-a463-c908-509cf0b514e22009-03-26T18:09:29-06:00<p>this is a great little led<br/>
use the breakout and some type of heatsink, and this will run directly off a lipo or 3.7v supply</p>analogwhale on COM-00563 - Luxeon III LED - White 3 Watt (Sale)analogwhaleurn:uuid:d1904288-a9d5-7919-34d0-52942eabfbce2007-05-07T12:49:47-06:00<p>These things really hurt your eyes. Be careful with them. Buy the SF breakout boards and your life will be nice and simple.</p>